Heat transmission and air flow friction in a solar air heater with a ribbed absorber plate: A computational study

Abdulmohsen O. Alsaiari; Ahamed Iqbal; Hani Abdulkhair; Lassaad Gzara; Eydhah Almatrafi; Hassan A.H. Alzahrani; N. Madhukeshwara; B.M. Prasanna; Maha Aljohani

Case Studies in Thermal Engineering (Dec 2022)

Heat transmission and air flow friction in a solar air heater with a ribbed absorber plate: A computational study

Abdulmohsen O. Alsaiari,
Ahamed Iqbal,
Hani Abdulkhair,
Lassaad Gzara,
Eydhah Almatrafi,
Hassan A.H. Alzahrani,
N. Madhukeshwara,
B.M. Prasanna,
Maha Aljohani

Affiliations

Abdulmohsen O. Alsaiari: Department of Mechanical Engineering, College of Engineering, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia; Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia
Ahamed Iqbal: Department of Mechanical Engineering, College of Engineering, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia; Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia
Hani Abdulkhair: Department of Mechanical Engineering, College of Engineering, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia; Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia
Lassaad Gzara: Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia
Eydhah Almatrafi: Center of Excellence in Desalination Technology, King Abdulaziz University, P.O. Box 80200, Jeddah, 21589, Saudi Arabia; Department of Mechanical Engineering, Faculty of Engineering-Rabigh, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
Hassan A.H. Alzahrani: Department of Chemistry, College of Science and Arts at Khulis, University of Jeddah, P.O. Box 355, Jeddah, Saudi Arabia
N. Madhukeshwara: Department of Mechanical Engineering, Jain Institute of Technology, Davanagere, 577003, Karnataka, India; Corresponding author. Department of Mechanical Engineering, Jain Institute of Technology, Davanagere, 577 003. Karnataka, India.
B.M. Prasanna: Department of Chemistry, Bapuji Institute of Engineering and Technology, Davanagere, 577004, Karnataka, India
Maha Aljohani: Department of Software Engineering, Collage of Computer Science and Engineering, University of Jeddah, P.O. Box 355, Jeddah, Saudi Arabia

Journal volume & issue: Vol. 40
p. 102517

Abstract

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The influence of geometrical parameters of V-symmetry ribs on heat flow and fluid flow characteristics of solar air heater (SAH) rectangular duct with ribbed absorber is investigated theoretically. Fabrication of ribs in repeated artificial protrusions pattern on the absorber surface appears as a simple approach for increasing the solar collectors radiation harnessing capacity. The various characteristics of artificial roughness protrusions include relative roughness height (e/Dh), relative roughness pitch (p/e), and angle of attack of flow (α), and the span of these parameters is determined based on experimental considerations of the device and working circumstances. To measure the improvement in the coefficient of heat transfer and friction factor, the outcomes were correlated to those of a smooth conduit under identical flow characteristics. The greatest increase in Stanton number and friction factor is 1.13 and 1.19 folds that of the smooth SAH duct, correspondingly.

Published in Case Studies in Thermal Engineering

ISSN: 2214-157X (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/case-studies-in-thermal-engineering/

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